﻿Ext.ns('Ext.ux');

Ext.define('Ext.ux.GMapPanel', {

    extend: 'Ext.panel.Panel',
    alias: 'widget.gmappanel',

    /**
* @cfg {Boolean} border
* Defaults to <tt>false</tt>. See {@link Ext.Panel}.<code>{@link Ext.Panel#border border}</code>.
*/
    border: false,

    /**
* @cfg {Array} respErrors
* An array of msg/code pairs.
*/
    respErrors: [{
        code: 'UNKNOWN_ERROR',
        msg: 'A geocoding or directions request could not be successfully processed, yet the exact reason for the failure is not known.'
    }, {
        code: 'ERROR',
        msg: 'There was a problem contacting the Google servers.'
    }, {
        code: 'ZERO_RESULTS',
        msg: 'The request did not encounter any errors but returns zero results.'
    }, {
        code: 'INVALID_REQUEST',
        msg: 'This request was invalid.'
    }, {
        code: 'REQUEST_DENIED',
        msg: 'The webpage is not allowed to use the geocoder for some reason.'
    }, {
        code: 'OVER_QUERY_LIMIT',
        msg: 'The webpage has gone over the requests limit in too short a period of time.'
    }],
    /**
* @cfg {Array} locationTypes
* An array of msg/code/level pairs.
*/
    locationTypes: [{
        level: 4,
        code: 'ROOFTOP',
        msg: 'The returned result is a precise geocode for which we have location information accurate down to street address precision.'
    }, {
        level: 3,
        code: 'RANGE_INTERPOLATED',
        msg: 'The returned result reflects an approximation (usually on a road) interpolated between two precise points (such as intersections). Interpolated results are generally returned when rooftop geocodes are unavailable for a street address.'
    }, {
        level: 2,
        code: 'GEOMETRIC_CENTER',
        msg: 'The returned result is the geometric center of a result such as a polyline (for example, a street) or polygon (region).'
    }, {
        level: 1,
        code: 'APPROXIMATE',
        msg: 'The returned result is approximate.'
    }],
    /**
* @cfg {String} respErrorTitle
* Defaults to <tt>'Error'</tt>.
*/
    respErrorTitle: 'Error',
    /**
* @cfg {String} geoErrorMsgUnable
* Defaults to <tt>'Unable to Locate the Address you provided'</tt>.
*/
    geoErrorMsgUnable: 'Unable to Locate the Address you provided',
    /**
* @cfg {String} geoErrorTitle
* Defaults to <tt>'Address Location Error'</tt>.
*/
    geoErrorTitle: 'Address Location Error',
    /**
* @cfg {String} geoErrorMsgAccuracy
* Defaults to <tt>'The address provided has a low accuracy.<br><br>{0} Accuracy.'</tt>.
* <div class="mdetail-params"><ul>
* <li><b><code>ROOFTOP</code></b> : <div class="sub-desc"><p>
* The returned result is a precise geocode for which we have location information accurate down to street address precision.
* </p></div></li>
* <li><b><code>RANGE_INTERPOLATED</code></b> : <div class="sub-desc"><p>
* The returned result reflects an approximation (usually on a road) interpolated between two precise points (such as intersections). Interpolated results are generally returned when rooftop geocodes are unavailable for a street address.
* </p></div></li>
* <li><b><code>GEOMETRIC_CENTER</code></b> : <div class="sub-desc"><p>
* The returned result is the geometric center of a result such as a polyline (for example, a street) or polygon (region).
* </p></div></li>
* <li><b><code>APPROXIMATE</code></b> : <div class="sub-desc"><p>
* The returned result is approximate.
* </p></div></li>
* </ul></div>
*/
    geoErrorMsgAccuracy: 'The address provided has a low accuracy.<br><br>"{0}" Accuracy.<br><br>{1}',
    /**
* @cfg {String} gmapType
* The type of map to display, generic options available are: 'map', 'panorama'.
* Defaults to <tt>'map'</tt>.
* More specific maps can be used by specifying the google map type:
* <div class="mdetail-params"><ul>
* <li><b><code>G_NORMAL_MAP</code></b> : <div class="sub-desc"><p>
* Displays the default road map view
* </p></div></li>
* <li><b><code>G_SATELLITE_MAP</code></b> : <div class="sub-desc"><p>
* Displays Google Earth satellite images
* </p></div></li>
* <li><b><code>G_HYBRID_MAP</code></b> : <div class="sub-desc"><p>
* Displays a mixture of normal and satellite views
* </p></div></li>
* <li><b><code>G_DEFAULT_MAP_TYPES</code></b> : <div class="sub-desc"><p>
* Contains an array of the above three types, useful for iterative processing.
* </p></div></li>
* <li><b><code>G_PHYSICAL_MAP</code></b> : <div class="sub-desc"><p>
* Displays a physical map based on terrain information.
* </p></div></li>
* <li><b><code>G_MOON_ELEVATION_MAP</code></b> : <div class="sub-desc"><p>
* Displays a shaded terrain map of the surface of the Moon, color-coded by altitude.
* </p></div></li>
* <li><b><code>G_MOON_VISIBLE_MAP</code></b> : <div class="sub-desc"><p>
* Displays photographic imagery taken from orbit around the moon.
* </p></div></li>
* <li><b><code>G_MARS_ELEVATION_MAP</code></b> : <div class="sub-desc"><p>
* Displays a shaded terrain map of the surface of Mars, color-coded by altitude.
* </p></div></li>
* <li><b><code>G_MARS_VISIBLE_MAP</code></b> : <div class="sub-desc"><p>
* Displays photographs taken from orbit around Mars.
* </p></div></li>
* <li><b><code>G_MARS_INFRARED_MAP</code></b> : <div class="sub-desc"><p>
* Displays a shaded infrared map of the surface of Mars, where warmer areas appear brighter and colder areas appear darker.
* </p></div></li>
* <li><b><code>G_SKY_VISIBLE_MAP</code></b> : <div class="sub-desc"><p>
* Displays a mosaic of the sky, as seen from Earth, covering the full celestial sphere.
* </p></div></li>
* </ul></div>
* Sample usage:
* <pre><code>
* gmapType: G_MOON_VISIBLE_MAP
* </code></pre>
*/
    gmapType: 'map',
    /**
* @cfg {Object} setCenter
* The initial center location of the map. The map needs to be centered before it can be used.
* A marker is not required to be specified.
* More markers can be added to the map using the <code>{@link #markers}</code> array.
* For example:
* <pre><code>
setCenter: {
geoCodeAddr: '4 Yawkey Way, Boston, MA, 02215-3409, USA',
marker: {title: 'Fenway Park'}
},

// or just specify lat/long
setCenter: {
lat: 42.345573,
lng: -71.098326
}
* </code></pre>
*/
    /**
* @cfg {Number} zoomLevel
* The zoom level to initialize the map at, generally between 1 (whole planet) and 40 (street).
* Also used as the zoom level for panoramas, zero specifies no zoom at all.
* Defaults to <tt>3</tt>.
*/
    zoomLevel: 3,
    /**
* @cfg {Number} yaw
* The Yaw, or rotational direction of the users perspective in degrees. Only applies to panoramas.
* Defaults to <tt>180</tt>.
*/
    yaw: 180,
    /**
* @cfg {Number} pitch
* The pitch, or vertical direction of the users perspective in degrees.
* Defaults to <tt>0</tt> (straight ahead). Valid values are between +90 (straight up) and -90 (straight down).
*/
    pitch: 0,
    /**
* @cfg {Boolean} displayGeoErrors
* True to display geocoding errors to the end user via a message box.
* Defaults to <tt>false</tt>.
*/
    displayGeoErrors: false,
    /**
* @cfg {Boolean} minGeoAccuracy
* The level to display an accuracy error below. Defaults to <tt>ROOFTOP</tt>. For additional information
* see <a href="http://code.google.com/apis/maps/documentation/reference.html#GGeoAddressAccuracy">here</a>.
*/
    minGeoAccuracy: 'ROOFTOP',
    /**
* @cfg {Array} mapConfOpts
* Array of strings representing configuration methods to call, a full list can be found
* <a href="http://code.google.com/apis/maps/documentation/reference.html#GMap2">here</a>.
* For example:
* <pre><code>
* mapConfOpts: ['enableScrollWheelZoom','enableDoubleClickZoom','enableDragging'],
* </code></pre>
*/
    /**
* @cfg {Array} mapControls
* Array of strings representing map controls to initialize, a full list can be found
* <a href="http://code.google.com/apis/maps/documentation/reference.html#GControlImpl">here</a>.
* For example:
* <pre><code>
* mapControls: ['GSmallMapControl','GMapTypeControl','NonExistantControl']
* </code></pre>
*/
    /**
* @cfg {Array} markers
* Markers may be added to the map. Instead of specifying <code>lat</code>/<code>lng</code>,
* geocoding can be specified via a <code>geoCodeAddr</code> string.
* For example:
* <pre><code>
markers: [{
//lat: 42.339641,
//lng: -71.094224,
// instead of lat/lng:
geoCodeAddr: '465 Huntington Avenue, Boston, MA, 02215-5597, USA',
marker: {title: 'Boston Museum of Fine Arts'},
listeners: {
click: function(e){
Ext.Msg.alert('Its fine', 'and its art.');
}
}
},{
lat: 42.339419,
lng: -71.09077,
marker: {title: 'Northeastern University'}
}]
* </code></pre>
*/
    // private
    mapDefined: false,
    // private
    mapDefinedGMap: false,
    initComponent: function () {

        this.addEvents(
            /**
* @event mapready
* Fires when the map is ready for interaction
* @param {GMapPanel} this
* @param {GMap} map
*/
            'mapready',
            /**
* @event apiready
* Fires when the Google Maps API is loaded
*/
            'apiready'
        );

        Ext.applyIf(this, {
            markers: [],
            cache: {
                marker: [],
                polyline: [],
                infowindow: []
            }
        });

        Ext.ux.GMapPanel.superclass.initComponent.call(this);

        if (window.google && window.google.maps) {
            this.on('afterrender', this.apiReady, this);

        } else {
            window.gmapapiready = this.apiReady.createDelegate(this);
            this.buildScriptTag('http://maps.google.com/maps/api/js?sensor=false&callback=gmapapiready');
        }

    },
    apiReady: function () {

        if (this.rendered) {

            Ext.defer(function () {
                if (this.gmapType === 'map') {
                    this.gmap = new google.maps.Map(this.getEl().dom, { zoom: this.zoomLevel, mapTypeId: google.maps.MapTypeId.ROADMAP });
                    this.mapDefined = true;
                    this.mapDefinedGMap = true;
                }

                if (this.gmapType === 'panorama') {
                    this.gmap = new GStreetviewPanorama(this.getEl().dom);
                    this.mapDefined = true;
                }

                if (!this.mapDefined && this.gmapType) {
                    console.log('sss');
                    this.gmap = new google.maps.Map(this.getEl().dom, { zoom: this.zoomLevel, mapTypeId: google.maps.MapTypeId.ROADMAP });
                    this.gmap.setMapTypeId(this.gmapType);
                    this.mapDefined = true;
                    this.mapDefinedGMap = true;
                }

                google.maps.event.addListenerOnce(this.getMap(), 'tilesloaded', Ext.Function.bind(this.onMapReady, this));
                google.maps.event.addListener(this.getMap(), 'dragend', Ext.Function.bind(this.dragEnd, this));


                if (typeof this.setCenter === 'object') {
                    if (typeof this.setCenter.geoCodeAddr === 'string') {
                        this.geoCodeLookup(this.setCenter.geoCodeAddr, this.setCenter.marker, false, true, this.setCenter.listeners);
                    } else {
                        if (this.gmapType === 'map') {
                            var point = new google.maps.LatLng(this.setCenter.lat, this.setCenter.lng);
                            this.getMap().setCenter(point, this.zoomLevel);
                            this.lastCenter = point;
                        }
                        if (typeof this.setCenter.marker === 'object' && typeof point === 'object') {
                            this.addMarker(point, this.setCenter.marker, this.setCenter.marker.clear);
                        }
                    }
                    if (this.gmapType === 'panorama') {
                        this.getMap().setLocationAndPOV(new google.maps.LatLng(this.setCenter.lat, this.setCenter.lng), { yaw: this.yaw, pitch: this.pitch, zoom: this.zoomLevel });
                    }
                }
            }, 200, this); // Ext.defer

        } else {
            this.on('afterrender', this.apiReady, this);
        }
    },
    // private
    afterRender: function () {

        var wh = this.ownerCt.getSize();
        Ext.applyIf(this, wh);
        Ext.ux.GMapPanel.superclass.afterRender.call(this);

    },
    // private
    buildScriptTag: function (filename, callback) {
        var script = document.createElement('script'),
        head = document.getElementsByTagName("head")[0];
        script.type = "text/javascript";
        script.src = filename;

        return head.appendChild(script);
    },
    // private
    onMapReady: function () {
        this.addMapControls();
        this.addOptions();
        this.addMarkers(this.markers);
        this.fireEvent('mapready', this, this.getMap());
        return this;
    },
    // private
    onResize: function (w, h) {

        Ext.ux.GMapPanel.superclass.onResize.call(this, w, h);

        // check for the existance of the google map in case the onResize fires too early
        if (typeof this.getMap() == 'object') {
            google.maps.event.trigger(this.getMap(), 'resize');
            if (this.lastCenter) {
                this.getMap().setCenter(this.lastCenter, this.zoomLevel);
            }
        }

    },
    // private
    setSize: function (width, height, animate) {

        Ext.ux.GMapPanel.superclass.setSize.call(this, width, height, animate);

        // check for the existance of the google map in case setSize is called too early
        if (Ext.isObject(this.getMap())) {
            google.maps.event.trigger(this.getMap(), 'resize');
            if (this.lastCenter) {
                this.getMap().setCenter(this.lastCenter, this.zoomLevel);
            }
        }

    },
    // private
    dragEnd: function () {
        this.lastCenter = this.getMap().getCenter();
    },
    /**
* Returns the current google map which can be used to call Google Maps API specific handlers.
* @return {GMap} this
*/
    getMap: function () {

        return this.gmap;

    },
    /**
* Returns the maps center as a GLatLng object
* @return {GLatLng} this
*/
    getCenter: function () {

        return this.getMap().getCenter();

    },
    /**
* Returns the maps center as a simple object
* @return {Object} this has lat and lng properties only
*/
    getCenterLatLng: function () {

        var ll = this.getCenter();
        return { lat: ll.lat(), lng: ll.lng() };

    },
    /**
* Creates markers from the array that is passed in. Each marker must consist of at least
* <code>lat</code> and <code>lng</code> properties or a <code>geoCodeAddr</code>.
* @param {Array} markers an array of marker objects
*/
    addMarkers: function (markers) {

        if (Ext.isArray(markers)) {
            for (var i = 0; i < markers.length; i++) {
                if (markers[i]) {
                    if (typeof markers[i].geoCodeAddr == 'string') {
                        this.geoCodeLookup(markers[i].geoCodeAddr, markers[i].marker, false, markers[i].setCenter, markers[i].listeners);
                    } else {
                        var mkr_point = new google.maps.LatLng(markers[i].lat, markers[i].lng);
                        this.addMarker(mkr_point, markers[i].marker, false, markers[i].setCenter, markers[i].listeners);
                    }
                }
            }
        }

    },
    /**
* Creates a single marker.
* @param {Object} point a GLatLng point
* @param {Object} marker a marker object consisting of at least lat and lng
* @param {Boolean} clear clear other markers before creating this marker
* @param {Boolean} center true to center the map on this marker
* @param {Object} listeners a listeners config
*/
    addMarker: function (point, marker, clear, center, listeners) {

        Ext.applyIf(marker, {});

        if (clear === true) {
            this.clearMarkers();
        }
        if (center === true) {
            this.getMap().setCenter(point, this.zoomLevel)
            this.lastCenter = point;
        }

        var mark = new google.maps.Marker(Ext.apply(marker, {
            position: point
        }));

        if (marker.infoWindow) {
            this.createInfoWindow(marker.infoWindow, point, mark);
        }

        this.cache.marker.push(mark);
        mark.setMap(this.getMap());

        if (typeof listeners === 'object') {
            for (evt in listeners) {
                google.maps.event.addListener(mark, evt, listeners[evt]);
            }
        }

        return mark;

    },
    /**
* Creates a single polyline.
* @param {Array} points an array of polyline points
* @param {Object} linestyle an object defining the line style to use
*/
    addPolyline: function (points, linestyle) {

        var plinepnts = new google.maps.MVCArray, pline, linestyle = linestyle ? linestyle : {
            strokeColor: '#FF0000',
            strokeOpacity: 1.0,
            strokeWeight: 2
        };

        Ext.each(points, function (point) {
            plinepnts.push(new google.maps.LatLng(point.lat, point.lng));
        }, this);

        var pline = new google.maps.Polyline(Ext.apply({
            path: plinepnts
        }, linestyle));

        this.cache.polyline.push(pline);

        pline.setMap(this.getMap());

    },
    /**
* Creates an Info Window.
* @param {Object} inwin an Info Window configuration
* @param {GLatLng} point the point to show the Info Window at
* @param {GMarker} marker a marker to attach the Info Window to
*/
    createInfoWindow: function (inwin, point, marker) {

        var me = this, infoWindow = new google.maps.InfoWindow({
            content: inwin.content,
            position: point
        });

        if (marker) {
            google.maps.event.addListener(marker, 'click', function () {
                me.hideAllInfoWindows();
                infoWindow.open(me.getMap());
            });
        }

        this.cache.infowindow.push(infoWindow);

        return infoWindow;

    },
    // private
    hideAllInfoWindows: function () {
        for (var i = 0; i < this.cache.infowindow.length; i++) {
            this.cache.infowindow[i].close();
        }
    },
    // private
    clearMarkers: function () {

        this.hideAllInfoWindows();
        this.hideMarkers();

    },
    // private
    hideMarkers: function () {
        Ext.each(this.cache.marker, function (mrk) {
            mrk.setMap(null);
        });
    },
    // private
    showMarkers: function () {
        Ext.each(this.cache.marker, function (mrk) {
            mrk.setMap(this.getMap());
        }, this);
    },
    // private
    addMapControls: function () {

        if (this.gmapType === 'map') {
            if (Ext.isArray(this.mapControls)) {
                for (i = 0; i < this.mapControls.length; i++) {
                    //this.addMapControl(this.mapControls[i]);
                }
            } else if (typeof this.mapControls === 'string') {
                //this.addMapControl(this.mapControls);
            } else if (typeof this.mapControls === 'object') {
                //this.getMap().add_control(this.mapControls);
            }
        }

    },
    /**
* Adds a GMap control to the map.
* @param {String} mc a string representation of the control to be instantiated.
*/
    addMapControl: function (mc) {

        var mcf = window[mc];
        if (typeof mcf === 'function') {
            //this.getMap().addControl(new mcf());
        }

    },
    // private
    addOptions: function () {

        if (Ext.isArray(this.mapConfOpts)) {
            var mc;
            for (i = 0; i < this.mapConfOpts.length; i++) {
                //this.addOption(this.mapConfOpts[i]);
            }
        } else if (typeof this.mapConfOpts === 'string') {
            //this.addOption(this.mapConfOpts);
        }

    },
    /**
* Adds a GMap option to the map.
* @param {String} mo a string representation of the option to be instantiated.
*/
    addOption: function (mo) {

        var mof = this.getMap()[mo];
        if (typeof mof === 'function') {
            this.getMap()[mo]();
        }

    },
    /**
* Looks up and address and optionally add a marker, center the map to this location, or
* clear other markers. Sample usage:
* <pre><code>
buttons: [
{
text: 'Fenway Park',
handler: function(){
var addr = '4 Yawkey Way, Boston, MA, 02215-3409, USA';
Ext.getCmp('my_map').geoCodeLookup(addr, undefined, false, true, undefined);
}
},{
text: 'Zoom Fenway Park',
handler: function(){
Ext.getCmp('my_map').zoomLevel = 19;
var addr = '4 Yawkey Way, Boston, MA, 02215-3409, USA';
Ext.getCmp('my_map').geoCodeLookup(addr, undefined, false, true, undefined);
}
},{
text: 'Low Accuracy',
handler: function(){
Ext.getCmp('my_map').geoCodeLookup('Paris, France', undefined, false, true, undefined);
}
},{

text: 'Bogus Address',
handler: function(){
var addr = 'Some Fake, Address, For, Errors';
Ext.getCmp('my_map').geoCodeLookup(addr, undefined, false, true, undefined);
}
}
]
* </code></pre>
* @param {String} addr the address to lookup.
* @param {Object} marker the marker to add (optional).
* @param {Boolean} clear clear other markers before creating this marker
* @param {Boolean} center true to set this point as the center of the map.
* @param {Object} listeners a listeners config
*/
    geoCodeLookup: function (addr, marker, clear, center, listeners) {

        if (!this.geocoder) {
            this.geocoder = new google.maps.Geocoder();
        }
        this.geocoder.geocode({
            address: addr
        }, this.addAddressToMap.createDelegate(this, [addr, marker, clear, center, listeners], true));

    },
    // private
    centerOnClientLocation: function () {
        this.getClientLocation(function (loc) {
            var point = new google.maps.LatLng(loc.latitude, loc.longitude);
            this.getMap().setCenter(point, this.zoomLevel);
            this.lastCenter = point;
        });
    },
    // private
    getClientLocation: function (fn, errorFn) {
        if (!errorFn) {
            errorFn = Ext.emptyFn;
        }
        if (!this.clientGeo) {
            this.clientGeo = google.gears.factory.create('beta.geolocation');
        }
        geo.getCurrentPosition(fn.createDelegate(this), errorFn);
    },
    // private
    addAddressToMap: function (response, status, addr, marker, clear, center, listeners) {
        if (!response || status !== 'OK') {
            this.respErrorMsg(status);
        } else {
            var place = response[0].geometry.location,
accuracy = this.getLocationTypeInfo(response[0].geometry.location_type, 'level'),
reqAccuracy = this.getLocationTypeInfo(this.minGeoAccuracy, 'level');
            if (accuracy === 0) {
                this.geoErrorMsg(this.geoErrorTitle, this.geoErrorMsgUnable);
            } else {
                if (accuracy < reqAccuracy) {
                    this.geoErrorMsg(this.geoErrorTitle, String.format(this.geoErrorMsgAccuracy, response[0].geometry.location_type, this.getLocationTypeInfo(response[0].geometry.location_type, 'msg')));
                } else {
                    point = new google.maps.LatLng(place.xa, place.za);
                    if (center) {
                        this.getMap().setCenter(point, this.zoomLevel);
                        this.lastCenter = point;
                    }
                    if (typeof marker === 'object') {
                        if (!marker.title) {
                            marker.title = response.formatted_address;
                        }
                        var mkr = this.addMarker(point, marker, clear, false, listeners);
                        if (marker.callback) {
                            marker.callback.call(this, mkr, point);
                        }
                    }
                }
            }
        }

    },
    // private
    geoErrorMsg: function (title, msg) {
        if (this.displayGeoErrors) {
            Ext.MessageBox.alert(title, msg);
        }
    },
    // private
    respErrorMsg: function (code) {
        Ext.each(this.respErrors, function (obj) {
            if (code == obj.code) {
                Ext.MessageBox.alert(this.respErrorTitle, obj.msg);
            }
        }, this);
    },
    // private
    getLocationTypeInfo: function (location_type, property) {
        var val = 0;
        Ext.each(this.locationTypes, function (itm) {
            if (itm.code === location_type) {
                val = itm[property];
            }
        });
        return val;
    }
});